JPS6155851B2 - - Google Patents
Info
- Publication number
- JPS6155851B2 JPS6155851B2 JP57189568A JP18956882A JPS6155851B2 JP S6155851 B2 JPS6155851 B2 JP S6155851B2 JP 57189568 A JP57189568 A JP 57189568A JP 18956882 A JP18956882 A JP 18956882A JP S6155851 B2 JPS6155851 B2 JP S6155851B2
- Authority
- JP
- Japan
- Prior art keywords
- molding
- end cap
- resin
- core
- molding body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000000465 moulding Methods 0.000 claims description 76
- 229920005989 resin Polymers 0.000 claims description 21
- 239000011347 resin Substances 0.000 claims description 21
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 239000011162 core material Substances 0.000 description 11
- 238000001746 injection moulding Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C2045/1486—Details, accessories and auxiliary operations
- B29C2045/14901—Coating a sheet-like insert smaller than the dimensions of the adjacent mould wall
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
本発明は自動車用モールデイングの製造方法、
特にエンドキヤツプの成形に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for manufacturing automotive moldings,
In particular, it concerns the molding of end caps.
一般に自動車のボデイパネル等に取付けられる
長尺なモールデイングは第１図に示すようにモー
ルデイング本体１の端末にエンドキヤツプ２を一
体化したものである。これはまずモールデイング
本体１を押し出し成形し、かつ所定寸法に切断し
た後、切断端面に接着剤を塗布して第２図に示す
ようにコア３とキヤビテイ４とから成る金型５の
成形空間６にセツトし、端面１ａとキヤビテイ４
の成形空間６の内壁６ａとの間で形成されるエン
ドキヤツプ成形空間７にスプール部８、ゲート部
９を介して樹脂を射出することによりエンドキヤ
ツプ２を成形して、モールデイング本体１の端面
側に一体化している。しかしながらこのような製
造方法によれば、スプール部８、ゲート部９によ
つて成形される不要成形品がエンドキヤツプ２に
付着してしまいこれを除去した時にエンドキヤツ
プ２の表面２ａに上記不要成形品の残部２ｍが残
り、あるいは切削の跡が残つてしまい見栄えが極
めて悪くなるとともに、不要成形品を除去するた
めに細心な注意を払わなければならず作業者に負
担となつていた。 Generally, a long molding that is attached to an automobile body panel or the like has an end cap 2 integrated at the end of a molding body 1, as shown in FIG. First, a molding body 1 is extruded and cut to a predetermined size, and then an adhesive is applied to the cut end surface to form a molding space of a mold 5 consisting of a core 3 and a cavity 4, as shown in FIG. 6, and the end face 1a and cavity 4
The end cap 2 is molded by injecting resin into the end cap molding space 7 formed between the molding space 6 and the inner wall 6a of the molding space 6 through the spool part 8 and the gate part 9. It is integrated on the side. However, according to such a manufacturing method, the unnecessary molded parts formed by the spool part 8 and the gate part 9 adhere to the end cap 2, and when they are removed, the unnecessary molded parts are left on the surface 2a of the end cap 2. The remaining 2m of the product or cutting marks remain, resulting in an extremely poor appearance, and the workers must be extremely careful in removing the unnecessary molded product, which is a burden on the workers.
本発明の目的はエンドキヤツプ成形空間にモー
ルデイングの底部側から樹脂を射出するように
し、樹脂残部、切削跡が底部に位置するようにし
て上記欠点を除去するものであり、以下実施例を
用いて詳細に説明する。 The purpose of the present invention is to inject resin into the end cap molding space from the bottom side of the molding so that the remaining resin and cutting marks are located at the bottom to eliminate the above drawbacks. This will be explained in detail.
第３図ないし第５図は本発明による自動車用モ
ールデイングの製造方法の一実施例を示す斜視図
および断面図であり、本発明においてはまずモー
ルデイング本体１０を樹脂の押し出し成形によつ
て成形する。この場合モールデイング本体１０の
両縁側には装飾フイルム１１が一体化されかつそ
の内部に金属板材から成る芯材１２が一体化され
る。上記モールデイング本体１０の底面１３の中
央側にはモールデイング本体１０の長手方向に沿
つて連続する凹溝１４が押し出し成形時に成形さ
れる。次にこのようなモールデイング本体１０を
第４図に示す金型１５にセツトする。この金型１
５はコア１６とキヤビテイ１７とから成り、コア
１６の内面１６ａ側には互いに対向するピン１
８，１８が植設され、このピン１８，１８によつ
てモールデイング本体１０の両端側が保持して位
置決めされ、コア１６におけるモールデイング本
体１０の中央側でかつ上記凹溝１４に対向する位
置には溶融合成樹脂の流路としてのスプール部１
９が形成され、このスプール部１９からコア１６
の内面１６ａ側に延長するピンポイントゲート２
０の先端２０ａが上記コア１６の内面１６ａ側に
設けられた小径の凸部の表面から開孔している。
なおスプール部１９には先端にフランジを有する
ピン２２が植設される。キヤビテイ１７の内面側
には上記モールデイング本体１０を収容する凹部
１７ａが設けられ、この凹部１７ａにおけるモー
ルデイング本体１０の端面１０ａに対向する内壁
１７ｂによつてエンドキヤツプ成形空間２３が成
形される。 3 to 5 are a perspective view and a sectional view showing an embodiment of the method for manufacturing a molding for an automobile according to the present invention. In the present invention, first, the molding body 10 is molded by extrusion molding of resin. do. In this case, decorative films 11 are integrated on both edge sides of the molding main body 10, and a core material 12 made of a metal plate material is integrated inside the decorative film 11. A concave groove 14 that is continuous along the longitudinal direction of the molding body 10 is formed in the center of the bottom surface 13 of the molding body 10 during extrusion molding. Next, such a molding body 10 is set in a mold 15 shown in FIG. This mold 1
5 consists of a core 16 and a cavity 17, and pins 1 facing each other are provided on the inner surface 16a side of the core 16.
8 and 18 are implanted, and both ends of the molding body 10 are held and positioned by the pins 18 and 18, and the molding body 10 is positioned at the center side of the molding body 10 in the core 16 and opposite the groove 14. is the spool portion 1 as a flow path for the molten synthetic resin.
A core 16 is formed from this spool portion 19.
Pinpoint gate 2 extending to the inner surface 16a side of
The tip 20a of the core 16 is opened from the surface of a small-diameter convex portion provided on the inner surface 16a side of the core 16.
Note that a pin 22 having a flange at the tip is implanted in the spool portion 19. A recess 17a for accommodating the molding body 10 is provided on the inner surface of the cavity 17, and an end cap molding space 23 is formed by an inner wall 17b facing the end surface 10a of the molding body 10 in the recess 17a.
このような構成の金型１５にモールデイング本
体１０をセツトし、キヤビテイ１７をコア１６に
対接閉鎖させ、スプール部１９、ゲート部２０を
介して凹溝１４側に樹脂を射出することにより樹
脂が凹溝１４をとコア面とで形成される空洞を介
して流動させモールデイング本体１０の両端末に
設けられたエンドキヤツプ成形空間２３，２３に
充填され、エンドキヤツプが成形される。 The molding body 10 is set in the mold 15 having such a configuration, the cavity 17 is closed against the core 16, and the resin is injected into the groove 14 side through the spool portion 19 and the gate portion 20. The liquid flows through the cavity formed by the groove 14 and the core surface, and fills the end cap forming spaces 23, 23 provided at both ends of the molding body 10, thereby forming the end cap.
型開きをしてモールデイング本体１０をエンド
キヤツプおよびスプール部１９、ピンポイントゲ
ート２０によつて成形された不要成形品とともに
取り出し、上記不要成形品を除去することによ
り、モールデイングとして完成する。本発明によ
ればスプール部１９、ピンポイントゲート２０が
モールデイングの底部側に位置するためその不要
成形品がモールデイングの底部側に付着するので
これを除去した跡あるいは除去残部がモールデイ
ングの底部側に位置することとなるので従来のよ
うにエンドキヤツプの表面２ａ側に発生すること
がなくモールデイングの外観を優れたものとする
ことができる。また上記凹溝１４に射出された樹
脂層の底部に凸部２１による凹部が発生し、この
凹部にピンポイントゲート部２０により成形され
た不要成形品の先端が付着するのでこの不要成形
品を除去した時に残部が発生してもこの残部が上
記凹部に収納されて隠れるのでモールデイングの
底面から残部が露出してモールデイングの底部と
被取付部材との間にこの残部が介在し両者間にギ
ヤツプが発生して取り付けと確実に行なうことが
できないという問題を解消できる。また凹溝１４
に樹脂層が形成されるのでこの樹脂層の熱収縮作
用によつてある程度モールデイングの端末側が表
面方向に反つてしまうのを防止でき、端末側の反
りによるモールデイングの剥離を抑えることがで
きる。 The mold is opened and the molding body 10 is taken out together with the end cap, the spool portion 19, and the unnecessary molded parts formed by the pinpoint gate 20, and the unnecessary molded parts are removed to complete the molding. According to the present invention, since the spool portion 19 and the pinpoint gate 20 are located at the bottom side of the molding, the unnecessary molded parts adhere to the bottom side of the molding, so that the traces or residual parts after removal of the unnecessary molded parts are left on the bottom side of the molding. Since it is located on the side, it does not occur on the surface 2a side of the end cap as in the conventional case, and the appearance of the molding can be improved. In addition, a concave portion is generated by the convex portion 21 at the bottom of the resin layer injected into the groove 14, and the tip of the unnecessary molded product formed by the pinpoint gate portion 20 adheres to this concave portion, so this unnecessary molded product is removed. Even if a residual portion is generated when the molding is done, this residual portion is stored in the recess and hidden, so that the residual portion is exposed from the bottom of the molding and is interposed between the bottom of the molding and the member to be attached, creating a gap between them. This solves the problem of not being able to install the product reliably due to the occurrence of problems. Also, the groove 14
Since a resin layer is formed on the molding, the heat shrinkage of this resin layer can prevent the end side of the molding from warping toward the surface to some extent, and it is possible to suppress peeling of the molding due to warping on the end side.
また本実施例によればモールデイング本体の両
側に設けたエンドキヤツプ成形空間２３，２３に
同時に樹脂を充填するようにしたので２個のエン
ドキヤツプを同時に成形でき量産化が計れる。す
なわち従来はモールデイング本体１０の両側に
個々にエンドキヤツプを成形していたので量産化
が図れずかつ作業者に負担を与えることとなつて
いたが、本発明ではこのような問題を解消でき
る。また従来インジエクシヨン成形空間７に樹脂
を射出した時の射出圧力によつてモールデイング
本体１が位置ずれしてしまいその表面側に金型内
面のこすれによる傷が発生し見栄えを悪くするこ
ととなつていたが、本実施例によればモールデイ
ング本体の両側に同一の射出圧力が加えられるの
でモールデイング本体の位置ずれが生じることが
なくこすれによる傷が発生しなくなる。 Furthermore, according to this embodiment, since the end cap molding spaces 23, 23 provided on both sides of the molding body are filled with resin at the same time, two end caps can be molded at the same time and mass production can be achieved. That is, in the past, end caps were individually molded on both sides of the molding body 10, which made it difficult to mass produce and placed a burden on the workers, but the present invention can solve these problems. Furthermore, when resin is conventionally injected into the injection molding space 7, the injection pressure causes the molding body 1 to shift its position, causing scratches on the surface side due to rubbing of the inner surface of the mold, resulting in poor appearance. However, according to this embodiment, since the same injection pressure is applied to both sides of the molding body, the molding body will not be misaligned and scratches due to rubbing will not occur.
なお、本発明においては第６図に示すようにモ
ールデイング本体１０の端末側に樹脂を射出して
エンドキヤツプＥを成形し、さらに樹脂をモール
デイング本体１０の表面側に流し込んで表面層３
０を成形してもよい。このような構成において表
面層３０の樹脂の色調をモールデイング本体１０
の色調と異ならせることにより変化に富んだ意匠
を得ることができる。 In the present invention, as shown in FIG. 6, resin is injected onto the terminal side of the molding body 10 to form the end cap E, and the resin is further poured onto the surface side of the molding body 10 to form the surface layer 3.
0 may be formed. In such a configuration, the color tone of the resin of the surface layer 30 is adjusted to the color tone of the molding body 10.
By making the color tone different, a variety of designs can be obtained.
以上説明したように本発明による自動車用モー
ルデイングの製造方法によれば、押し出し成形さ
れかつ所定寸法に切断されたモールデイング本体
をインジエクシヨン成形金型の成形空間にセツト
し、上記モールデイング本体の端面とインジエク
シヨン成形空間の内壁との間で形成されるエンド
キヤツプ成形空間に樹脂を射出してエンドキヤツ
プを形成するようにしたモールデイングの製造方
法において樹脂の射出口をモールデイングの底部
側に位置させたので、射出口側に成形される不要
成形品の除去残部、除去跡がモールデイングの底
部側に位置し外部から目視されなくなるのでモー
ルデイングの外観を優れたものとすることができ
る。 As explained above, according to the method of manufacturing a molding for an automobile according to the present invention, a molding body that has been extruded and cut into a predetermined size is set in a molding space of an injection molding die, and the end face of the molding body is set in a molding space of an injection molding die. In a molding manufacturing method in which an end cap is formed by injecting resin into an end cap molding space formed between the molding and the inner wall of the injection molding space, the resin injection port is located on the bottom side of the molding. Therefore, the removal residue and removal trace of the unnecessary molded product molded on the injection port side are located on the bottom side of the molding and are not visible from the outside, so that the molding can have an excellent appearance.
第１図、第２図は従来の自動車用モールデイン
グの製造方法の一例を示す斜視図および断面図、
第３図ないし第５図は本発明による自動車用モー
ルデイングの製造方法の一実施例を示す斜視図お
よび断面図、第６図は本発明による自動車用モー
ルデイングの製造方法の他の実施例を示す斜視図
である。
１０……モールデイング本体、１４……凹溝、
１５……金型、１６……コア、１７……キヤビテ
イ、１９……スプール部、２０……ピンポイント
ゲート部、２１……凸部、２３……エンドキヤツ
プ成形空間。
FIGS. 1 and 2 are a perspective view and a sectional view showing an example of a conventional method for manufacturing moldings for automobiles,
3 to 5 are perspective views and sectional views showing one embodiment of the method for manufacturing moldings for automobiles according to the present invention, and FIG. 6 shows another embodiment of the method for manufacturing moldings for automobiles according to the present invention. FIG. 10...molding body, 14...concave groove,
15... Mold, 16... Core, 17... Cavity, 19... Spool portion, 20... Pinpoint gate portion, 21... Convex portion, 23... End cap molding space.
Claims (1)
ールデイング本体をキヤビテイとコアを有する金
型にセツトし、金型のキヤビテイ内壁と上記モー
ルデイング本体の端面との間でエンドキヤツプ成
形空間を成形して上記エンドキヤツプ成形空間に
樹脂を射出することによりエンドキヤツプをモー
ルデイング本体に一体化した自動車用モールデイ
ングの製造方法において、モールデイング本体の
底面の一部にその長手方向端末でエンドキヤツプ
成形空間に達して開口する連続した凹溝を形成
し、金型を閉じたときモールデイングの底面をコ
ア内面に接しさせてコア内面と前記凹溝とで形成
される連続した空洞にモールデイング本体の底部
側に位置させた樹脂射出口から樹脂を射出し前記
空洞内を長手方向に流動させてエンドキヤツプ成
形空間に樹脂を充てんしてエンドキヤツプを一体
化することを特徴とする自動車用モールデイング
の製造方法。 ２ 上記凹溝に一体化される樹脂層に凹部が成形
されるようにコアの内面側に凸部を設け、この凸
部の表面側に射出口を臨ませた特許請求の範囲第
１項記載の自動車用モールデイングの製造方法。[Claims] 1. A molding body that has been extruded and cut to a predetermined size is set in a mold having a cavity and a core, and an end cap is inserted between the inner wall of the cavity of the mold and the end face of the molding body. In a method of manufacturing an automobile molding in which an end cap is integrated into a molding body by molding a molding space and injecting resin into the end cap molding space, a part of the bottom surface of the molding body is provided with its longitudinal end. A continuous groove is formed that reaches the end cap molding space and opens, and when the mold is closed, the bottom of the molding comes into contact with the inner surface of the core, forming a continuous cavity formed by the inner surface of the core and the groove. An automobile characterized in that the end cap is integrated by injecting resin from a resin injection port located on the bottom side of the molding body and causing the resin to flow in the longitudinal direction within the cavity to fill the end cap molding space with the resin. manufacturing method for moldings. 2. According to claim 1, a convex portion is provided on the inner surface side of the core so that a concave portion is formed in the resin layer that is integrated into the concave groove, and the injection port is exposed to the surface side of the convex portion. A method of manufacturing automotive moldings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18956882A JPS5978833A (en) | 1982-10-28 | 1982-10-28 | Manufacture of molding for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18956882A JPS5978833A (en) | 1982-10-28 | 1982-10-28 | Manufacture of molding for automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5978833A JPS5978833A (en) | 1984-05-07 |
| JPS6155851B2 true JPS6155851B2 (en) | 1986-11-29 |
Family
ID=16243507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18956882A Granted JPS5978833A (en) | 1982-10-28 | 1982-10-28 | Manufacture of molding for automobile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5978833A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06459B2 (en) * | 1986-10-06 | 1994-01-05 | 橋本フオ−ミング工業株式会社 | Wind molding and manufacturing method thereof |
| JPH0628910B2 (en) * | 1987-09-29 | 1994-04-20 | 橋本フォーミング工業株式会社 | Window molding manufacturing method |
| JP4707253B2 (en) * | 2001-04-18 | 2011-06-22 | 株式会社オーシーシー | Exterior wire retaining device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5229051A (en) * | 1975-08-28 | 1977-03-04 | Westinghouse Electric Corp | Elevator device |
| JPS5555842A (en) * | 1978-10-20 | 1980-04-24 | Shiseido Co Ltd | Metallic plate insert molding and products obtained therethrough |
| JPS57140114A (en) * | 1981-02-25 | 1982-08-30 | Inoue Mtp Co Ltd | Method of unitarily forming indication such as letter or pattern on surface of formed article |
-
1982
- 1982-10-28 JP JP18956882A patent/JPS5978833A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5229051A (en) * | 1975-08-28 | 1977-03-04 | Westinghouse Electric Corp | Elevator device |
| JPS5555842A (en) * | 1978-10-20 | 1980-04-24 | Shiseido Co Ltd | Metallic plate insert molding and products obtained therethrough |
| JPS57140114A (en) * | 1981-02-25 | 1982-08-30 | Inoue Mtp Co Ltd | Method of unitarily forming indication such as letter or pattern on surface of formed article |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5978833A (en) | 1984-05-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2285963A (en) | Knob structure and method of making same | |
| US4840760A (en) | Manufacturing method for magnetic tape cassette | |
| JPH0686080B2 (en) | Injection mold | |
| JPS618320A (en) | Method and device for manufacturing plastic injection moldedshape | |
| JPS6155851B2 (en) | ||
| CN110450350B (en) | Method for producing a model body | |
| JPS6344046B2 (en) | ||
| JPS5978830A (en) | Manufacture of molding for automobile | |
| JPS6144650B2 (en) | ||
| JPS6155850B2 (en) | ||
| JPS5978831A (en) | Manufacture of molding for automobile | |
| US4144303A (en) | Method and apparatus for molding a composite plastic article | |
| JPH01244918A (en) | Manufacture of window in vehicle | |
| JPH10264202A (en) | Production of composite synthetic resin molded product | |
| JP2712728B2 (en) | Cassette half molding method and cassette half molding die | |
| JP2712727B2 (en) | Cassette half molding method and cassette half molding die | |
| JP3033410B2 (en) | Manufacturing method of long resin molded products | |
| JP2000153542A (en) | Mold for skin material partially decorated and integrated molded product and partial decoration molding method of skin material | |
| JP2530166B2 (en) | Molding manufacturing method | |
| JPH11216741A (en) | Method and apparatus for decorating resin part surface | |
| JP3008750B2 (en) | Manufacturing method of long resin molded products | |
| JPH031238Y2 (en) | ||
| JPH0159089B2 (en) | ||
| JPS583844A (en) | Manufacture of molded product having core material | |
| JPS62256619A (en) | Manufacture of arm rest with cloth |